Noise power estimator, receiver and method for noise power estimation
AssigneeMontage Technology (Shanghai) Co., Ltd.
InventorZhen Lu
Life of this patent
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Abstract
A noise power estimator, comprising: a first subtractor configured to generate at least one first signal by subtracting a reconstructed interference signal from a symbol of a received first time-domain training sequence; a second subtractor configured to generate at least one second signal by subtracting an estimated value for the first time-domain training sequence from one of the at least one first signal; an averaging circuit configured to generate at least one square average value by average the at least part of the at least one second signals; and a detector configured to detect a minimum value among the at least one square average value and output the minimum value as a noise power estimation value.
Claims18
A noise power estimator, comprising:
- a first subtractor configured to generate at least one first signal by subtracting a reconstructed interference signal from a symbol of a received first time-domain training sequence;
- a second subtractor coupled to the first subtractor and configured to generate at least one second signal by subtracting an estimated value for the first time-domain training sequence from one of the at least one first signal;
- an averaging circuit coupled to the second subtractor and configured to generate at least one square average value by averaging the at least one second signals;
- a detector coupled to the averaging circuit and configured to
- detect a minimum value among the at least one square average value and
- output the minimum value as a noise power estimation value;
- an equalizer configured to generate a pre-equalized signal by pre-equalizing the received signal;
- and
- a signal re-constructor coupled to both the equalizer and the first subtractor and configured to generate the reconstructed interference signal based on the pre-equalized signal.
A method of estimating noise power, comprising:
- generating at least one first signal by subtracting a reconstructed interference signal from a symbol of a received first time-domain training sequence;
- generating at least one second signal by subtracting an estimated value for the first time-domain training sequence from one of the at least one first signal;
- generating at least one square average value by averaging the at least one second signals;
- detecting a minimum value among the at least one square average value;
- outputting the minimum value as a noise power estimation value;
- generating a pre-equalized signal by pre-equalizing the received signal;
- and
- generating the reconstructed interference signal based on the pre-equalized signal.
Dependencies are inferred from the claim text.